//
//  Button.swift
//  Example
//
//  Created by Vladislav Grigoryev on 19.11.2020.
//  Copyright © 2020 GORA Studio. https://gora.studio
//
//  Permission is hereby granted, free of charge, to any person obtaining a copy
//  of this software and associated documentation files (the "Software"), to deal
//  in the Software without restriction, including without limitation the rights
//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//  copies of the Software, and to permit persons to whom the Software is
//  furnished to do so, subject to the following conditions:
//
//  The above copyright notice and this permission notice shall be included in
//  all copies or substantial portions of the Software.
//
//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//  THE SOFTWARE.

import Foundation
import UIKit

class Button: UIButton {

  typealias Action = () -> Void

  @objc func _touchUpInside() { touchUpInside?() }
  var touchUpInside: Action? {
    didSet {
      switch (oldValue, touchUpInside) {
      case (.none, .some):
        addTarget(self, action: #selector(_touchUpInside), for: .touchUpInside)
      case (.some, .none):
        removeTarget(self, action: #selector(_touchUpInside), for: .touchUpInside)
      default: break
      }
    }
  }
}
